Bring 2 or 3 potions of life fluid or some food, and u must be so good that u can kill 2 rots and 2 skeletons while they attacks u, or u can just run away and kill one at the time and go after the rest after well well.

Go threw the poison fields, dont go to the rots that is right after the poison fields, go instead down the hole and there u will meet a skeleton. And in that room is a door wich is locked, the key u can find in a dead NPC that is in the rot place right after the poison fields, dont know the number, then u open the door and go down the stair and there u will see 2 rots and 2 skeletons, and there is also a door, wich lock out the skeletons and the rots, and if the door is locked there is a lever behind one of the white statues, the one that is situated most north, just right click and the door will sprung open...on the floor inside the room the katana will be, but this place is quite known so it is not so easy to get it, but it's like the copper that after the server is saved u can get the katana.....Good luck.....and about the Ghoul, where the hell is the crater that u can climb up to the other room and then meet the ghoul, and the keys, no one's got it!!!